curve will be greater than 0 but less than 1. A) True False 6. The standardized normal distribution always has a mean of zero and a standard deviation of one. True A) False 7. Excel’s RAND() function produces random numbers that are uniformly distributed from 0 to 1. The standard deviation of this distribution is about A) .5000 B) .2500 C) .3333 D) .2887 8. The expected value of an unbiased estimator is equal to
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3.1 Measures of Central Tendency (Page 1 of 16) 3.1 Measures of Central Tendency Mean‚ Median and Mode a. mean‚ x = Example 1 b. ! x = sum of the entries n number of entries Find the mean of 26‚ 18‚ 12‚ 31‚ 42 The median is the middle value of an ordered set of data. If there is an even number of data values‚ then the median is the mean of the two middle values. Example 2 Find the median of 25‚ 30‚ 37‚ 21‚ 38 Example 3 Find the median of 3‚ 7‚ 9‚ 4‚ 8‚ 2‚ 6‚ 5 c. The mode is the
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Week Two Assignment BUS308: Statistics for Managers Tiffany Aldridge January 9‚ 2012 Week Two Assignment Chapter 4: 4.4‚ 4.20 4.4 Suppose that a couple will have three children. Letting B denote a boy and G denote a girl: a. Draw a tree diagram depicting the sample space outcomes for this experiment b. List the sample space outcomes that correspond to each of the following events: 1) All three children will have the same gender. BBB‚ GGG 2) Exactly two of the three
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Two tailed test | Z = 2.58 | Z = 1.96 | One tailed test | Z = 2.33 | Z = 1.64 | Q. Z= X- μ σ√n = x- μS.EX The mean height of a random sample of 100 students is 64” and standard deviation is 3”. Test the statement that the mean height of population is 67” at 5% level of significance. Solution: We are given n = 100 ‚ X = 64‚ S = 3 µ = 67 Null HypothesisAlternative Hypothesis
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Case Problem Set 3: Problem 1: Young Professional magazine was developed for a target audience of recent college graduates who are in their first 10 years in a business/professional career. In its two years of publication the magazine has been fairly successful. Now the publisher is interested in expanding the magazine’s advertising base. Potential advertisers continually ask about the demographics and interests of subscribers to Young Professional. To collect this information the magazine has
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the client over the phone. Complex accounts on the other hand are those that will need further credit investigation such as field investigation where in a field credit investigator conducts field verification of business‚ employer‚ or residence. Standard TAT for simple accounts is set by the bank at 3 hours while TAT for complex accounts is at 7 hours. It is the purpose of this study to analyze the January data on turnaround time of Bank XYZ in relation to other factors such as the credit analysts’
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estimate ± Margin of error. Thus‚ how big or small the Margin of Error is accounts for how large the range of possible values representing the population parameter will be. The Margin of error is made up of the desired confidence level and the standard error (which you learned about in chapter 7). The confidence level is represented as z/2 or t/2‚ where is the probability of error (you’ll see this in later chapters when we get into Hypothesis Testing) and is calculated as 100 – the confidence
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“Econometrics of Event Studies” S. P Khotari and Jerold B. Warner Forthcoming in B. Espen Eckbo (ed.)‚ Handbook of Corporate Finance: Empirical Corporate Finance‚ Volume A (Handbooks in Finance Series‚ Elsevier/North-Holland)‚ Ch. 1‚ 2006 Econometrics of Event Studies S.P. Kothari Sloan School of Management‚ MIT Jerold B. Warner William E. Simon Graduate School of Business Administration University of Rochester May 19‚ 2006 Key words: Event study‚ abnormal returns‚ short-horizon
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UNIVERSITI UTARA MALAYSIA COLLEGE OF ARTS AND SCIENCES SCHOOL OF QUANTITATIVE SCIENCES GROUP ASSIGNMENT SQQS1013 ELEMENTARY STATISTICS 2nd SEMESTER SESSION 2012/2013 INSTRUCTIONS: 1. Five (5) persons in a group. 2. Answer ALL questions and show all your calculations clearly. 3. Report must be typewritten using A4 paper. 4. Every question and answers must be written on a new page. 5. The front cover for the report is as in Appendix
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The levels of measurement from the lowest to the highest level are nominal‚ ordinal‚ interval‚ and ratio Variables measured at the nominal level of measurement are at the lowest level and must follow three rules: (1) the data categories must be exhaustive (each datum will fit into at least one category identified by the researcher)‚ (2) the data categories must be exclusive (each datum will fit into only one category)‚ and (3) the data cannot be rank ordered. Nominal data differ from ordinal data
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